Stephen Atkins

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NASA Ames Research Center, in cooperation with the FAA, is studying automation for aiding airport surface traffic management. The Surface Management System (SMS) is a decision support tool that will provide information and advisories to help controllers and air carriers collaboratively manage the movements of aircraft on the surface of busy airports,(More)
A wide variety of bioinformatic tools have been described to characterize potential transcriptional regulatory mechanisms based on genomic sequence analysis and microarray hybridization studies. However, these regulatory mechanisms are still experimentally verified using transient transfection methods. Current transfection methods are limited both by their(More)
Synthetic biology is an emerging field in which the procedures and methods of engineering are extended living organisms, with the long-term goal of producing novel cell types that aid human society. For example, engineered cell types may sense a particular environment and express gene products that serve as an indicator of that environment or affect a(More)
Taxi delay is the largest of all aviation movement delays. However, taxi-out delays have not received attention equal to that focused on airborne delays because taxi-out delays often result from downstream problems. Also, until recently, there was no practical means of tracking surface movements. New surface surveillance technology will revolutionize(More)
At many airports, aircraft take off from multiple departure runways. During periods of high departure demand, whether or not the departure runways are balanced directly affects the capacity and efficiency of the airport. This paper begins by investigating the cause of runway imbalances. Homogeneity in the direction of flight during a departure push and the(More)
The Ration by Schedule (RBS) algorithm has been accepted by the aviation community as the basis of Collaborative Decision Making (CDM) in strategic Traffic Flow Management (TFM) initiatives such as Ground Delay Programs (GDPs) and Airspace Flow Programs (AFPs). However, applications of RBS to date have been limited to strategic metering applications in(More)
NASA Ames Research Center, in cooperation with the FAA, has completed research and development of a proof-ofconcept Surface Management System (SMS). This paper reports on two recent SMS field tests as well as final performance and benefits analyses. Field tests and analysis support the conclusion that substantial portions of SMS technology are ready for(More)
  • S. Atkins
  • 2008 IEEE/AIAA 27th Digital Avionics Systems…
  • 2008
A combination of traffic demand growth, next generation air transportation system (nextgen) technologies and operational concepts, and increased utilization of regional airports is expected to increase the occurrence and severity of coupling between operations at proximate airports. Without understanding the nature of metroplexes and developing solutions(More)
The adoption of arrival Area Navigation (RNAV) procedures has been slow partly due to the challenge to controllers of merging RNAV and traditionally vectored arrivals to the same runway without either providing additional spacing or vectoring the arrivals off the RNAV procedure, reducing the benefits of the RNAV procedure. This paper studies two Relative(More)